Hi,
- Very first is how actually these datastore works in comparison with > Cinder and Glance of OpenStack ? > The best thing to do here is to read the documentation and let us know if there's something you don't understand. http://docs.opennebula.org/4.10/administration/storage/sm.html > - Which Datastore I can put on faster connectivity and which on slower? > I don't understand the question, the only thing I can say is that the storage subsystem is something OpenNebula relies on. You will get the same performance on your VMs with or without OpenNebula, as it depends on the hypervisor hardware and storage. So when thinking about this, think about it in terms of general performance. > - Suppose I launched 2 VMs from one image, where the images are stored of > Both VMs? > In OpenStack I need to create Volume and attached as a RootDisk to > instance, how should I go ahead in OpenNebula? > You register an image, which will be stored in the datastore of choice, and then you create a template that references that image. When you instantiate it, OpenNebula will clone that image, and depending on the datastore driver it will clone it somewhere. Read the guide for each datastore type for more info. > - How to calculate required IOPS to decide Storage Backend eg. Number of > Drives, RAID level, Connectivity, etc. > Best thing to do here is to run some benchmarks, as it largely depends on the whole setup > - I was planning to use iSCSI with Nexenta based storage. Is that ok or > should I go with Ceph ? will Ceph or NFS give performance ? > Yes, Ceph will have better performane than NFS. - Any suggestions to design the storage backend for DataStore. > It depends on each driver > - Do I need fiber connectivity between Compute Nodes and Storage ? > No, but the better the connectivity is, the less chances you have of having a bottleneck. > > Regards > Neelesh Gurjar > _______________________________________________ > Users mailing list > Users@lists.opennebula.org > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org > -- Jaime Melis Project Engineer OpenNebula - Flexible Enterprise Cloud Made Simple www.OpenNebula.org | jme...@opennebula.org
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